Momentum transfer dependence of generalized parton distributions

Abstract

We revisit the model for parametrization of momentum dependence of nucleon generalized parton distributions in the light of recent MRST measurements of parton distribution functions. Our parametrization method with minimum set of free parameters give a sufficiently good description of data for Dirac and Pauli electromagnetic form factors of proton and neutron at small and intermediate values of momentum transfer. We also calculate the GPDs for up and down quark by decomposing the electromagnetic form factors for nucleon using the charge and isospin symmetry and also study the evolution of GPDs to a higher scale. We further investigate the transverse charge densities for both the unpolarized and transversely polarized nucleon and compare our results with the Kelly's distribution.

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• Nucleon axial form factor from generalized parton distributions
• Generalized parton distributions in spin-3/2 particles
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• Form factors of the nucleon by using the t dependence of parton distribution functions
• Flavour structure of the nucleon electromagnetic form factors and transverse charge densities in the chiral quark-soliton model
• Examining the structure functions of nucleons by introducing new Ansatz and their consequences on parton distribution functions in higher approximation
• Nucleon Form Factors from GPDs